MacDon R85 Operator's Manual page 105

4. Loosen upper jam nut (B) on both sides of conditioner
adjustment bolts.
5. To increase roll gap, turn lower nut (A) clockwise.
6. To decrease roll gap, turn lower nut (A)
counterclockwise.
7. Measurement at (C) should be 35 mm (1.4 in.). This
equates to 25.4 mm (1 in.) of roll gap.
8. Once adjustment is complete, hold nut (A) and torque
jam nut (B) to 102 Nm (75 lbf·ft).
NOTE:
When adjusting roll gap, be sure that the thread
protruding at the adjustment is the same on both ends
of the conditioner rolls. This will achieve consistent
intermesh across the rolls.
9. Check roll gap. Refer to
IMPORTANT:
Roll timing is critical when the roll gap is decreased because the bars may contact each other if the timing
is wrong.
10. Refer to 4.4 Roll Timing, page 90
11. Close the driveshield. Refer to
214366
OPERATING THE HEADER
4.2.1 Checking Roll Gap, page
for instructions on checking the timing.
3.4 Driveshields, page
Figure 4.11: Roll Gap Adjustment Bolt
86.
30.
88
C
B
A
Revision A